<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>login</title>
  <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
  <link type="text/css" rel="stylesheet" href="css/base.css">
  <link type="text/css" rel="stylesheet" href="https://cdn.staticfile.org/bootstrap/4.6.0/css/bootstrap.min.css">
</head>
<body>
<div class="container">
  <div class="row">
    <div class="offset-sm-3 offset-md-4 col-sm-6 col-md-4 col-12 mt-5 border border-1">
      <form class="p-2">
        <div class="form-group row">
          <label class="col-4" for="username">账号</label>
          <input class="col-8 form-control" id="username">
        </div>
        <div class="form-group row">
          <label class="col-4" for="password">密码</label>
          <input type="password" class="col-8 form-control" id="password">
        </div>
        <div class="form-check">
          <label class="form-check-label">
            <input type="checkbox" class="form-check-input">记住密码
          </label>
        </div>
        <div class="form-group d-flex justify-content-around">
          <input type="button" class="btn btn-sm btn-success" value="登录"/>
          <input type="button" class="btn btn-sm btn-primary" value="注册"/>
        </div>
      </form>
    </div>
  </div>
</div>
</body>
<script src="https://cdn.staticfile.org/jquery/3.2.1/jquery.min.js"></script>
<script src="https://cdn.staticfile.org/popper.js/1.15.0/umd/popper.min.js"></script>
<script src="https://cdn.staticfile.org/bootstrap/4.6.0/js/bootstrap.js"></script>
</html>